The attribution to Robert Blake was made by Sir Geofrey Keynes in a letter of 23 October 1926. The fragment on the recto is close in style and general arrangement to ‘A Druid Ceremony’ in the Keynes collection (Butlin 1981, no.R3, pl.1182). The paper has been cut roughly to follow the back of the stooping figure on the left, then diagonally up towards the upper edge; there was originally at least one standing figure behind the stooping one.